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首页> 外文期刊>RSC Advances >Simultaneous bifunctional application of solid-state lighting and ratiometric optical thermometer based on double perovskite LiLaMgWO6:Er3+ thermochromic phosphors
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Simultaneous bifunctional application of solid-state lighting and ratiometric optical thermometer based on double perovskite LiLaMgWO6:Er3+ thermochromic phosphors

机译：基于双重钙钛矿型LiLaMgWO6：Er3 +热致变色荧光粉的固态照明和比率式光学温度计的双功能同时应用

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摘要

Realization of simultaneous, efficient bifunctional application of thermochromic phosphors on light emitting diodes (LEDs) and as ratiometric thermometers is significant. Herein, doped Er ~(3+) ions are introduced as an activator into double perovskite LiLaMgWO _(6) host lattice. The developed phosphors can be efficiently excited by a near-ultraviolet LED chip and show bright green emission, mainly at 527 and 543 nm, as well as very low thermal quenching. Their chemical stability is studied, demonstrating excellent application potentials. Furthermore, the temperature sensing properties of LiLaMgWO _(6) :0.01Er ~(3+) were analyzed in the wide range of 303–483 K and show a good exponential relationship between ratiometric intensity and temperature ( R ~(2) > 0.999), as well as high sensitivity (2.24% K ~(?1) ). Such a system not only optimizes the performance in solid light emitting but also provides an excellent platform for designing high-sensitivity optical thermometry.
机译：实现热致变色磷光体在发光二极管（LED）上以及作为比率式温度计的同时高效双功能应用非常重要。在此，将掺杂的Er〜（3+）离子作为活化剂引入双钙钛矿LiLaMgWO _（6）主晶格中。所开发的磷光体可被近紫外LED芯片有效激发，并显示亮绿色发射（主要在527和543 nm处发射）以及非常低的热猝灭。对它们的化学稳定性进行了研究，证明了其极好的应用潜力。此外，在303–483 K的宽范围内分析了LiLaMgWO _（6）：0.01Er〜（3+）的温度感测特性，并显示出比率强度与温度之间的良好指数关系（R〜（2）> 0.999 ）以及高灵敏度（2.24％K〜（？1））。这样的系统不仅优化了固体发光的性能，而且为设计高灵敏度光学测温仪提供了极好的平台。

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